<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>CSS权重案例</title>
    <style>
      /* .nav li  权重是 11 */
      .nav li {
        color: red;
      }
      /* 需求把第一个小li 颜色改为 粉色加粗 ? */
      /* .pink  权重是 10   .nav .pink  20  */
      .nav .pink {
        color: pink;
        font-weight: 700;
      }
    </style>
  </head>
  <body>
    <ul class="nav">
      <li class="pink">人生四大悲</li>
      <li>家里没宽带</li>
      <li>网速不够快</li>
      <li>手机没流量</li>
      <li>学校没wifi</li>
    </ul>
  </body>
</html>
